Just kidding, F(x) still remains the same 5-member group, only perhaps they've adopted a doppelganger. Kim Heechul posed as Sulli's replica, copying three distinctive Sulli hairstyles. He tweeted teasingly, "I'm Sullhee". Heechul's followers replied, "So cute", "He wore that style better than a real girl", "Prettier than a girl", and "Who is this girl?" Sulli and Heechul's "siblings by bond" relationship is widely known, which explains the lack of foaming anti-fans (that we've seen). [gallery link="file"] Source: nate